Power saw



Aug- 28, 19.45. F. G. CARNI-:s r-:rAL i 33u44? POWER SAW Filed Jan. 3VO, 1945 3 Sheets-Sheet l I m'efltars Wea 6.. Carnes i R w Zl/Zjred Carnes,

Attorneys Aug. 2s, 1945.

F. G. CARNES ETAL 2,383,447

POWER SAW Filed Jan. 30, 1945 3 Sheets-Sheet 2 Inventors Aug. 2s, 1945.

F. G. CARNESY Er AL POWER SAW Filed Jan. 50, 1945 s sheets-sheet 5 s 0 n I fd 6'. Carnes izlfred Car/zes,

s. By I and Patented Aug. 28, 1945 I POWER SAW Fred G. 4 Carnes. and Wilfred Di. Carnes,

Au Sable 1 `orkS.,N. Y.

' Applicationlanuary, 1945,. Serial No. 527.53259.

' vwarms. (cries-1e).

This invention` relates to a power saw; and more -particulfarly-.tov such a saw`- adapted to` bei used the sawing4 off stones; as byf stone masons or thelike; I

A primary object of-A this invention is the-pro-- nism for said saw.I blanda,upwardly.I andi downs wardly in accordance with the movement of,` theV blader An additionai: important. objectvA is; the. provision vcian improved mechanical movement; whereby rotary motion of' the drive; mechanism is: transmittecl to reciprocating. movement of: the. blade; and means for suitably supporting the blade. in such mannen as. to. permit suchareciprocatory motion.` i i 'i l l y Stills.` other objects reside in'. the. provisionof such saw whichwillbesturdy.; and fdurable in con.. struction, reliable yand emcient in, operatiom and relatively` simpleandl inexpensive to manufacs ture; andv assemble..

.Other objects reside. inythe, combination-s of e1einents, arrangements. ofA parta, and features; of construction, all as will be more fully pointed out hereinafter and show-nin the accompanying drawings,v wherein there is disclosed a preierred embodiment of this. inventive. concept;

Inithedrawingsy. i c;

Figurey l is a topiplanview ot one. formof des vice embodyingV features of the instant inten--V tion. Y l

FigureZ is. an end elevational view of the devicev shown ini` Figure i l.

Figure 3 is an enlarged sectional view taken substantially along the line 3-3 of Figure 2 as viewed in the direction indicated by the arrows, and

Figure 4 is an enlarged sectional view taken substantially along the line 4-4 of Figure 2 as Aviewed in the direction indicated by the arrows.

Similar reference characters refer to similar ings,

Havingy reference now tothe drawings, there is generallyA indicatedat Illa frame, comprised of upright cornerposts lil., eachy having inwardly turned; flanges lf2, adaptedto form vertically extending interiorly disposed channels. rliche corner posts lil are connected by transverse horizontal members. lf3, serving as reinforcements, and'v holding the frame inl assembled relation. Extending from the base of one pair. ofv posts. l1| are a. pair. of:Y angled members t4', forming a triangular extension. tothe .fra/me, and secured to the corresponding extermities 4of' the horizontal members. I3fy isa second? pairv of angled members i5, vertically aligned with the members I4'. Secured between thefmembers t5; is a.. transverse supporting plateV tB,. adapted: to. carry an electric motor provided' with` a, drive. pulley lli..`

The motor. tlf is adapted to drive, through a belt 20, a pulley 2lmounted on the extremity o f a. vertically extendingl shaft 22, mounted for; rotation. suitable journals; 2:3; carried` by the members i741 and; 1;.5... A. verticallyr extending groovey 24. extends;4 they full` length, of` the drive shaft22 betweenliburnals Mounted in aligned relation-With the drive Shaft, 2:2-, is; a, supnortinerrod: 25;. which has positioned` for: vertical movement thereon a .pair of brackets 26, which inA turn,A carry a, gea-rsupporting; frame- 251.,y withiny which positioned a bevel gear 28 mounted. on: the shaftz2f, and having` an interiorly positionedzkey therein; tofkey thesame n the-groove 2:4- inlv such manner; that rotation of the shaft 22 is imparted to the gear 2381. `Bevel gear 2E engages; a.. secondibevel gear 291 also, carried by the frame;l Zal-, and provided with a stub axle S11-, to; the. extremity of whichy is secured a crank arm, 3I-f. The, orfrIkL-a-rm' 3ll is. pivotally secured as by meansiof` a pivot 32I toan extremity oi a link 33, terminating in a transverse bracket member 3.4 provided at its; extremities with co1- l-ars 3,5., adapted.v to surroundza, pair .otaligned oppositely disposed axles, 3.6, carried by the. frame in a manner tube hereinafter described.

Asl best shown, in Eigule-B; cachot the axles 36de journaled. for rotationin a collar' 3T carried by a horizontally positioned link 38; to the extremities of which are pivotally secured as by pivots 39 the extremities of additional links 4U,

the opposite extremities of which, in turn, are.

pivotally mounted as on pivots 4l in opposite corners of blocks 42. Each of the blocks 42 is mounted'in the channel formed by the flanges I2 of the members H, in such manner as to be vertically movable therein when moved, in a manner to be described hereinafter, but precluded axles, and mounted in identical fashion on addi,k

tional blocks 42.

From the foregoing it will now be seen that when the motor is energized and drives through the shaft and gear arrangement above discussed, the crank 3| for rotary movement, that such movement is transmitted through the members 33 to reciprocatory movement of the axles 36, and that such reciprocatory movement is per-A mitted in a horizontal plane by means of the links 38 and 40, and their pivotal relation with each other and with the blocks 42. vIt will also be seen that the axles 36 maintain their relative position in the same horizontal plane continuously throughout such reciprocatory motion, unless moved from an exterior source, in a vertical direction, in a manner to be more fully pointed out hereinafter.

J ournaled in suitable upstanding lugs 50 on the upper. extremities of frame members I3 are the extremities of a roller 5|., adapted to be rotated by means of a hand wheel 52 carried by a shaft 53, carried by a lug 54 secured to the side of one of the longitudinal extending frame members |3, and terminating in a suitable worm gear adapted to engage a cooperating gear on the extremity of the shaft 5| (not shown) and contained in a gear box 55.

Suitable cords 56 surround the roller 5| at points adjacent each extremity, and extendover pulleys 51, rotatably mounted in suitable supporting brackets 58 at the upper extremities of each of the posts ll. lI t'he cords 56 extend to suitable eyes 59, secured in the top portion of each of the blocks 42. Additional cords 60 correspondingly surround the roller 5|4 and extend over pulleys 6|, mounted on the interior surface of each of Ithe posts The cords 60 then extend down-'- wardly over additional pulleys 62 -mounted at the base of each of the posts and thence upwardly to engage eyes 63 carried by the base of each of the blocks 42.

An additional cord 65 is coiled about the roller 5| at an intermediate point and extends over a pulley 66 carried by a supporting bracket 61, -to an eye 68 carried by the upper extremity of the gear supporting frame 21. v y

Now from the foregoing it will lbe seen that when the hand wheel 52 is rotated, corresponding rotation of the rollers 5I, acts through the cords or wires 56, 6U, and 65, to move all of the blocks 42 either upwardly or downwardly in unison, in accordance with the direction of rotation of the hand wheel, and that simultaneously the gear box frame is moved upwardly therewith; the weight of the device being sufficient to permit the same to move downwardly when the blocks 42 are moved downwardly, by gravity. Thus it will be seen that the saw blade 44 is maintained in a constant horizontal line, and at the same distance from the driving mechanism therefor at all times.

It will now be readily apparent that there is herein provided an improved power saw, adapted particularly for the use of stone masons or the like, accomplishing all the objects of this inven- ..tion and others including many advantages of great practical utility and commercial importance. l

As many embodiments may be made of this inventive concept, and as many modiiications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

We claim:

1. In a power saw, in combination, a frame, including uprights having channels therein, blocks vertically slidable in said channels, axles movably secured to said blocks, a saw blade carried for reciprocating movement by said axles, power means for reciprocating said blade, said means including a drive shaft and a gear frame slidably mounted onsaid shaft, means for simultaneously moving said blocks to vary the vertical position of said blade, and means associated with said last-mentioned means for simultaneously varying the position `of said gear frame.`

2. In a power saw, in combination, a frame, including uprights having channels therein, blocks vertically slidable in said channels, axles movably secured to said blocks, a saw blade carried for reciprocating movement vby said axles, power means for reciprocating said blade, and means for simultaneously moving all of said blocks to Vary the vertical position of said blade, said means including a rotatable roller, pulleys at the upper and lower extremities of each of said uprights, and cords passed over said pulleys and secured to the upper `and lower extremities of said blocks.

3. Inl a power saw, infcombination, a frame including uprights having channels therein, blocks vertically slidable yin said channels,` each of said blocks having a pair of oppositely disposed normally parallel links pivotally Asecured thereto, and a second link pivotally secured between the ,free extremities of said first-mentioned links, axles rotatably secured to the centers of each of said second links, a saw blade carried forreciprocating movement by said axles, power means for reciprocating said blade, and means for si- 

